Is it possible to display an image from a laptop to a TV through a TV set-top box?

Question

System administration

Maybe I googled badly, but did not find the answer. I have a laptop with Windows 10, an old TV and digital TV from Rostelecom. Is it possible to somehow transfer an image from a laptop to a TV screen through a Rostelecom TV set-top box? There is a connector and an hdmi type cable, but I don’t know why it is at all, is it possible through it? There is nothing in the menu in the settings of the TV

Answer 1

It is forbidden

Answer 2

No, since the set-top box does not receive a video signal from output devices (computers, for example) and, accordingly, does not transmit it later to the "display".
prefixes that can, of course, exist, but definitely not in the "ear-wide"
Although, you can look for "inputs" on the prefix, suddenly they are. Or, if you can’t cope on your own, write the name of the prefix (full) and they will help you here.